Vulnerability Assessment & Network Security Forums

If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200405-07] Exim verify=header_syntax buffer overflow

Vulnerability Assessment Details

[GLSA-200405-07] Exim verify=header_syntax buffer overflow

Vulnerability Assessment Summary
Exim verify=header_syntax buffer overflow

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200405-07
(Exim verify=header_syntax buffer overflow)

When the option "verify = header_syntax" is used in an ACL in the
configuration file, Exim is vulnerable to a buffer overflow attack that can
be triggered remotely by sending malicious headers in an email message.
Note that this option is not enabled in Exim's default configuration file.


This vulnerability can be exploited to trigger a denial of service attack
and potentially execute arbitrary code with the rights of the user used by
the Exim daemon (by default this is the "mail" user in Gentoo Linux).


Make sure the verify=header_syntax option is not used in your exim.conf


All users of Exim should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=net-mail/exim-4.33-r1"
# emerge ">=net-mail/exim-4.33-r1"

Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

Cables, Connectors

Lenovo YOGA BOOK 10.1" Ultrathin 2-in-1 Android Tablet 64GB Wi-Fi (Gray): NEW
Lenovo YOGA BOOK 10.1NEW Lenovo Tab 10 10.1" 16GB Tablet Android 6.0 Marshmallow WiFi Bluetooth Black
NEW Lenovo Tab 10 10.1Lenovo ThinkCentre Tiny VESA Mount -
Lenovo ThinkCentre Tiny VESA Mount -  pictureLenovo Thinkcentre All-in-One 23"m90z i5 650@3.2Ghz 4GB RAM 500GB HDD Win 7 Pro
Lenovo Thinkcentre All-in-One 23


No Discussions have been posted on this vulnerability.